Analysis of the Polarized Electron Paramagnetic Resonance Spectrum of Rhodobacter Sphaeroides
In the earliest steps of photosynthesis the energy of absorbed light is channelled to a reaction centre where the first chemical reactions occur. In intact systems these electron transfer processes take place in an essentially linear and irreversible fashion. However if the chain of molecules along which the electron travels is chemically or physically broken the electrons are constrained to remain within the reaction centre where they may be used as a probe of their environment. We show here that simulation of the Electron Paramagnetic Resonance (EPR) spectra of pairs of such electrons may be used to gain insight into the structure of the reaction centre.
KeywordsElectron Paramagnetic Resonance Reaction Centre Radical Pair Electron Paramagnetic Resonance Signal Hyperfine Coupling
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